Hi! First time here!

I'm playing FFVII and I've already finished Disk 2 so the game asks me to swap to Disk 3 but then comes the problem: when I go to "Retroarch > Quick Menu > Disk Control > Disk Cycle Tray Status" it doesn't show the expected "Ejected/Closed virtual disk tray" message. So when I try to directly load Disk 3 it loads the game but as it has never been used (so Disk 3 asks me to load Disk 1).

This didn't happen the time I switched from Disk 1 to Disk 2, back then the swap was done following the instructions (https://github.com/recalbox/recalbox-os/wiki/How-to-switch-multi-disc-PS1-games-(EN)). The only difference is that I updated the system when playing Disk 2 and I suspect this might be related to the version of Retroarch (but I have no idea).

I've looked everywhere but I can't find any help because all the troubles swapping disks are never related to the imposibility to use this option.

Anyone might know what's happening here?
Thanks

Raspberry Pi 3 Model B - Motherboard (1.2 GHz Quad-core ARM Cortex-A53, 1GB RAM, USB 2.0)
Recalbox 18.07.13
Retroarch 1.7.3